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gavo
7th January 2005, 22:13
I through the only codec were cook for real 8 and above were aac and he-acc? Where does sony codec come in
damrod
8th January 2005, 00:30
atrac3 was replaced in ra10 by aac and he-aac
ra8plus => atrac3
MSlv
8th January 2005, 09:39
Isn't ATRAC3 used for Sony's MiniDisc walkman?
Sirber
8th January 2005, 15:43
Yes.
karl_lillevold
10th January 2005, 06:50
ATRAC3 is not used much anymore, even though it was pretty good quality at 132 kbps. In RA10, ATRAC3 was replaced by AAC (and HE-AAC). Recently, even Sony themselves have finally released portable "MP3 players" that can actually play MP3. Sorry for the OT remark.
Sirber
10th January 2005, 15:50
What was good about ATRAC3 was the low CPU usage :)
damrod
10th January 2005, 19:43
he-aac is different in this case ;)

btw does someone try mp3 surround? i wonder if it's good...
Sirber
10th January 2005, 19:50
Can do the same with matrixmixer :rolleyes:
CiNcH
23rd September 2005, 18:49
Now that is interesting. Sorry for bringing this topic up again.


@ Karl,

do you know the reason for choosing Sony's ATRAC3 as being the format of choice for RA8?
Sirber
23rd September 2005, 18:57
licensing cost?
karl_lillevold
24th September 2005, 06:49
cook/G2 does not scale too well beyond 96 kbps and we needed a good codec for higher bitrates. What decided the choice, I think, as Sirber suggested, was licensing costs _at that time_. To clarify, MP3 or AAC are by no means free. There are IP (patent) pools for both that require commercial users to pay substantial amount of fees.... ATRAC3 might have been the cheapest solution at that time. As you all know, RA10 chose AAC as its solution for the same problem, and ATRAC3 is no longer supported as an encoding choice. Licensing costs change, as the IP owners change theirs minds over time....
Inventive Software
20th October 2005, 12:23
Good choice!
bond
20th October 2005, 18:19
ATRAC3 ... was pretty good quality at 132 kbps. thats more like a myth, karl

one look at rjamorims comparison tells everything:
http://www.rjamorim.com/test/multiformat128/plot18z.png
http://www.rjamorim.com/test/multiformat128/results.html

look at mp3 (lame) vs. wma9 too ;)
karl_lillevold
20th October 2005, 18:22
Yes, I guess so. rjamorims's listening tests show the ultimate truth, after all ;)
bond
20th October 2005, 18:23
Yes, I guess so. rjamorims's listening tests show the ultimate truth, after all ;)well they come close ;)

btw when will real release an avc codec? :D ;)
Sirber
21st October 2005, 07:00
a codec to control them all ;)